Ok, so when I first heard Steve say that the best way to interact with a hand held device was to use your thumbs I did scoff a little. Now I have to admit that he was indeed right. I had been scribbling with the pen on the Pocket PC for years and thought that it was the best way to go. The drawback with the pen though, was that it was working against a soft plastic screen and there was always the fear in the back if my mind that one day I would drag some grit across that screen and leave an ugly scratch. That has not an issue with the iPhone. If I had to some up one feature that makes this the revolution that it is, I would point to the glass screen. I can now hammer away on the virtual keys with my soft thumbs way faster than before. Indoors or out without a second thought.